Paper-feed mechanism for accounting machines



April 26, 1949. J. MUELLER ET A PAPER FEED MECHANISM FOR ACCOUNTING MACHINES l3 Sheets-Sheet 1 Filed Feb. 17, 1944 INVENTORS JOHN MUELLER AND JOSEPH M. M DONNELL )4 .4 412,44

ATTORNEY 13 Sheets-Sheet 2 FIG.3

& L RL EE LN OLN TEw NU E C v M M T WN H O 5 O 5 T M 5 2 0 7 OW J 5 0 O E w 4 o A J C N E S .N 0 SP R 0 JK R u N MUN A CV 5 E man I20 0 MJ D 5 EEE: S 5 S S D D D D MMMM N 3 w H w w n 3 3 3 3 DOE AND ROE INC.

April 1949. .I. MUELLER ET AL 2,468,341

PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944 13 Sheets-Sheet 3 I40 I30 ||7 FIG, 5

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mvc ORS JOHN M LLERAND JOSEPH MM DONNELL J/LAAIJ? ATTORNEY J- MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING MACHINES April 26, 1949.

L C M L AE R N 4 EM t 8 MUED Y e 0 EC E T U M M M o s E M J T m. IT. 9 m2 3. m9 H n m HP L OE S JS 3 O l J Filed Feb. 17, .1944

April 26, 1949. J. MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING MACHINES l3 Sheets-Sheet 5 Filed Feb. 17, 1944 D M RN 2 S Lw E mac n .4 m QON m L A HP O M Sm 0mm v l 2: J 3 now EN 09 a 8m 5 n9 p i J www Q m w -vT 3w nwm m9 m2 l omww v 1 Q2 03 2 I l I. no. I- w 7. M S me me 2.. Q. O mm INVEN TORS ATTORNEY April 26, 1949. .1. MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944 1a Sheets-Sheet 6 JOHN MUELLERAND JOSEPH M. M DONNELL )L v TMW\\\\\\\\\\\\\\7////// w: H z M 02 m9 W M W ohm J1 w M 4m m: cm W W W I 11/14. v t. W mwm v 8 own W V 2m April 26, 1949. J. MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944,

13 Sheets-Sheet 7 INVENTORS JOHN MUELLER AND JOSEPH M.M DONNELL L )L 4 J2 ATTORNEY April 26, 1949. J. MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING mcnmss l3 Sheets-Sheet 8 Filed Feb. 17, l944 INVENTORS JOHN MUELLER AND JOSEPH M. M DONNELL.

ATTORNEY April 1949- J. MUELLER ET AL 2,468,341

PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944 13 Sheets-Sheet 9 FIG. I3

INVENTORS JOHN MUELLER AND JOSEPH M. M DONNELL 1. 4 JILL? ATTORNEY April 26, 1949. J. MUELLER ET AL 2,468,341

PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944 13 Sheets-Sheet 10 FIG. I4

INVENTORS JOHN MUELLER AND JOSEPH M. M DONNELL ATTORNEY x3 my? April 26, 1949. J. MUELLER ET AL PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, 1944 l3 Sheets-Sheet ll l I O 909 267 g 905 262 907 as )L4ALLIZ ATTORNEY JOHN MUELLERAND BY JOSEPH M.MDONNELL p 1949- J. MUELLER ET AL 2,468,341

PAPER FEED MECHANISM FOR ACCOUNTING MACHINES Filed Feb. 17, ,1944

13 Sheets-Sheet l2 INVENTORS JOHN MUELLER AND JOSEPH M.M"-DONNELL kLLdlk -g ATTORNEY Patented Apr. 26, 1949 PAPER-FEED MECHANISM FOR ACCOUNT- ING MACHINES John Mueller, North Bergen, N. J., and Joseph Martin McDonnell, Baldwin, N. Y., assignors to Remington Rand Inc., Buffalo, N. Y., a corporation of Delaware Application February 17, 1944, Serial No. 522,720

6 Claims. 1

The invention relates to the paper feed mechanism of accounting and like machines, and more especially to the long feed mechanism for imparting occasional feeds to the paper to greater extents than the ordinary line spacing.

One object of the invention is to improve the means whereby the paper feed is geared to the platen, so as to enable a larger portion of a machine cycle to be utilized for paper feeding and so as to provide better and sturdier gearing for the purpose, and generally to provide a better mechanical construction and operation. Where long feeds have been operated by the power drive of the machine, they have usually involved some sort of reciprocating rack or other part, the return motion of which has consumed a portion of the cycle; and to feed the paper to any considerable distance by these devices has presented mechanical difliculties.

According to the present invention, the long feed of the paper is effected from the power drive through a train of unidirectional gearing controlled by diiferential devices and a clutch, so that. when advancing the paper, the platen shaft is simply geared to the machine motor like any other shaft.

It is an object of the invention to provide improved means to control the said clutch and the cooperating parts to time their operation in relation to one another and to the other mechanism of the machine.

One object of the invention is to provide control devices to initiate a long-feed of the paper automatically under desired conditions, which controls are so designed that they may readily be adapted to the different requirements of different installations.

Where long feed mechanisms are used to feed a web of paper divided into forms, it sometimes happens that the number of items in a group exceeds the ca acity of a form and means have heretofore been provided to feed the paper automatically to the first item line of the next form; and, where totals are taken at the ends of the groups, some special provisions have been made to meet the case where a total taking operation is indicated at the very bottom of a form, resulting sometimes in a total being printed alone on the second form. It is one of the objects of the present invention to prevent the total from appearing alone on a sheet. Means are provided whereby in all instances, at least one item is printed on the same form as the total.

Another object of the invention is to provide improved means for controlling line spacing.

(Cl. 235-6L9) Means are provided whereby, under certain cir-. cumstances, a particular line space operation may be prevented altogether. Means are also provided to afford different extents of line-to-line feed. For example, the several lines of the heading of an invoice may be single spaced and the item lines double-spaced.

Another object is to provide improved means whereby the paper carriage of the machine may be displaced laterally, notwithstanding that the platen mounted in said carriage is geared to the machine motor.

Means are provided whereby, under certain conditions, the long feed mechanism may cause the machine to execute a blank cycle, that is to say, a cycle in which most of the ordinary functions of the inachine such as printing, adding, etc, are suspended. In the instance of the invention chosen for illustration herein, this is used to await an automatic determination by the machine as to whether or not a total is to be taken at the. time, but it may also be used for other purposes.

Other objects of the invention will be apparent in the course of the following description.

To the above ends, the invention consists in certain features of construction and combinations and arrangements of parts, all of which will be. fully described herein and particularly pointed out in the claims.

In the drawings, except where otherwise stated} the side views are taken as viewed from the left of the operator as he faces the front of the machine, and the plan views are as viewed from: the rear.

Fig. 1 is a fragmentary elevation in front-torear section on the line ll of Fig. '1, and showing certain parts in operated positions;

Fig. 2 is an isometric schematic view showing the power drive mechanism of the long paper feed;

Fig. 3 is a right hand end view of the carriage of the tabulating machine and showing in sectiona portion of the power drive mechanism of the present invention;

Fig. 4-shows one form of a web of forms adapted to be handled by the invention;

Fig. 5 is an elevation of the rear left portion of the machine, but with many parts omitted;-

Fig. 6 is a view of the means for controlling, line space feed from the long feed mechanism, parts being shown in section on the line 6-6 of Fig. 8. In this figure the gearing is shown proportioned to afl'ord a feed twice as great as in the other figures;

Fig. 7 is a plan view of the long feed mecha nism, with some parts broken for foreshortening and with some parts omitted;

Fig. 8 is a rear elevation of the main portions of the feed mechanism, with parts broken and parts omitted.

Fig. 9 is a longitudinal section through the centers of the two principal shafts, with parts broken and parts omitted. This is on a larger scale than the preceding;

Fig. 10 is a front to rear vertical section of the main portion of the mechanism, in section on the line Ill-l of Fig. 7;

Fig. 11 is a partial view in section on the line lI-II of Fig. 9;

Fig. 12 is a similar view in section on the line I2-I2 of Fig. 9;

Fig. 13 is a view similar to Fig. 11, but showing the parts at a certain point in the course of an operation;

Fig. 14 is a right hand view of a portion of the mechanism, with parts in section on the line Il-Il of Fig. 15;

Fig. 15 is a longitudinal sectional view of parts of the mechanism;

Fig. 16 is a more or less diagrammatic elevation. on a small scale, of the means whereby the long feed mechanism may cause the tabulating machine to execute a blank stroke;

Fig. 17 is an exploded isometric view of some of the mechanism shown in Fig. 16;

Fig. 18 is a view similar to Fig. 1 but showing the parts in normal position;

Fig. 19 is a time chart;

Figs. 20, 21, and 22 are face views of line finding disks; and

Fig. 23 is a diagram of a certain linkage.

In the drawings the invention is shownapplied to the Powers No. 3 record controlled tabulating machine described in the patent to John Mueller, No. 2,381,361, dated August 7, 1945. For the purposes of the present invention, the machine is, with some minor exceptions, the same as that disclosed in the patent to Lasker and Mueller, No. 2,323,816, dated July 6, 1943. Said Powers tabulating machine comprises a base section having side frames 50 (Fig. 2) surmounted by a head section having side frames Punched cards are fed through the base section where they are sensed, and the adding and printing are effected by mechanism in the head section. The paper carriage is supported by brackets I35 (Fig. 1) and I25 (Fig. 5), one rising from each of the frames 5|, said brackets supporting a stationary rail consisting of a flat bar 52. The main carriage bar 53 has what amounts to grooved rails 54- embracing the bar 52 on which they can be slid right and left if the work so requires, the carriage being then looked in position, as by a set screw (not shown). By means not shown, the main carriage bar 53 supports an auxiliary carriage structure comprising a longitudinal bar and end brackets 55 in which latter is journaled the shaft 58 of the paper platen 51 which stands behind the type bars 58, and which, in the illustrated instance, is used as a paper feeding cylinder.

For the long feed, the platen shaft is rotated by unidirectional gearing from a motor, without the intervention of a reciprocating element; and preferably, it is geared to the regular motor that operates the machine as a whole. In the application of the invention to the Powers machine, it was found desirable to locate much of the mechanism behind the paper carriage. As shown schematically in Fig. 2, the main base shaft 60, the front head shaft BI and rear head 4 shaft 52 are driven at equal speeds by a belt 88, base worm shaft 64, upright shaft 55 and head worm shaft 66. One rotation of the shafts 80, 5| and 52, measures a cycle of the machine operation.

The line space mechanism of the Powers machine is at the right hand end of the carriage and comprises (Fig. 3) a line spaceratchet III, operated by a pawl II pivoted at I2 to a plate I3 pivoted on the platen shaft and limited in its oscillation by a stud 14 in a slot 15. Said pawl is operated by a link 16, lever I1, link 18 and an arm 88 on a rock shaft 8| journaled in the main carriage 53. A rock shaft 82 journaled in the stationary framework, has an arm 83 which presses on the upper surface of a flange 84 projecting from the rock shaft BI and normally holds the parts in the positions shown in Fig. 3, against the tension of a spring 85. On line spacing, the shaft 82 is permitted to be rocked clockwise by the spring 85 until a pin 88 on an arm 81, fast on said shaft, is arrested by one of the steps 88 of a settable stop plate 98. This causes the plate I3 and pawl II to advance a distance equal to three, two, or 1 tooth space of ratchet 10, or not at all, depending on the setting of stop plate 80. A cam then forces shaft 82 to rock counterclockwise. The first part of the return motion causes pawl II to engage a tooth of the ratchet, and further movement rotates the platen three, two, one or no teeth.

The stop plate 90 is pivoted on a rock shaft 9| having a plate 82 fixed thereon and having in it four holes into any one of which a plunger lock 83 may be inserted when setting plate 98 relative to plate 92 and shaft 9|. A third plate 55 is pivoted on the shaft 8| and may be set relative to plate 92 and secured in set position by a plunger 96 of the former entering holes in the latter plate. Plate has a finger 94 shown in engagement with a fixed stop 91, but said plate may be set one or more spaces away from said stop, whereupon it becomes possible, by rocking the shaft 9|, to swing stop plate 90 counterclockwise one or more spaces and thus to afford line spacing to an extent greater than that to which the plate 90 was set; and said shaft is so rocked on total taking cycles, to space totals farther than item line spacing. In the drawing, the parts are set, as required for the form shown in Fig. 4, for double line space of items and the same (no additional space) for totals. The rocking of shaft 8| is effected preliminary to a total cycle, by an upward motion of a link 98, having a slot in which engages a pin I00 on an arm IOI projecting from the shaft, a spring I02 tending to hold the pin in the top of the slot. When the link moves upward, it will rock the shaft as far as the plate 95 and stop 81 will permit, the balance of the motion of the link stretching the spring. Said link 98 is operated by the total cams and a grand otal cam (not shown) on the shafts 2I8, 2I9 (Fig. 16) of the total taking control unit of the machine. It moves upward in the latter part of the blank cycle, remains up until after printing on the total cycle, and is then restored. It corresponds to the link 851 of the Patent 2,323,816 (see Figs, 52, 55, 5'7, and 59 of that patent). This link 98 is utilized in the present instance as a convenient element to initiate a long paper feed following a total, as will appear hereinafter.

Long feed drive The main paper feed drive shaft I08 (Fig. 2-)

Sb lii -Jri atom.

lies behind the described carriage mounting, and it'has a worm wheel I04 driven by a worm I05 and upright shaft I06 which is in effect, an extension of the shaft 85. As the shaft I06 is not in exact alinement with shaft 65 nor with worm I05, it is connected with shaft 65 by a universal joint I01 and with the worm I05 by a universal joint I00. The shaft I03 and a clutch disk I I fast thereon, rotate continuously when the machine is in operation. Loose on said shaft are a drive disk III and an assembly comprising certain notchedpick up or line disks I12 and, rigid therewith, a gear wheel H3. The disk III is rotated by a one-revolution clutch comprising a clutch pawl II2 pivoted to said disk, and the clutch disk IIO, adapted to be engaged by said pawl. Certain devices carried by the drive disk III, impart measured partial rotations to the drum I12 and gear H3, and the latter meshes with a gear II on a counter shaft IIB which, at the left hand end of the carriage, drives, by miter gears II1 a fb're-and-aft shaft II8 which is geared to the platen shaft 50 by miter gears I20. It will be perceived that when the long paper feed is in operation, the platen shaft is simply geared to the motor like any other shaft. instead of being operated by a reciprocating device.

The paper feed shaft I03 is geared to rotateat a higher angular speed than the main shafts 00, 6| and 62, so that a complete rotation of disk III is effected in less than a complete machine cycle, and there is a portion of the cycle when the mechanism driven by said disk is standing still. The parts are so timed that this quiescent interval covers the moment at which printing is effected. In the illustrated instance, the worm wheels on shafts 60, GI and 62, have sixty teeth each, and the wheel I04 on the shaft I03. has fifty teeth, so that the gearing is in the ratio of six' to five. Therefore the paper feed is effected in 300 of a machine cycle, which affords time for a feed of considerable length without excessivespeed.

It will be perceived that the unit comprising the gear H3 and disks I12 is geared to the platen so that a rotation of said unit rotates the platen and so that any rotation of the platen, as by the line space feed, also rotates said unit.

Framing 'diiferent positions right and left. Gears II1 are journaled in a cast housing I30 and gears I in a similar housing I3I, the latter having a' hub which is supported by the platen shaft 56, and the former having a hub which is supported by a bracket I32 which, in turn, has a flange secured to the rails 54 of the main carriage bar' 53. In the present instance, the bracket I32 has rigid therewith a flanged hub or sleeve I03 (Figs. '7 and 9) which sleeve lies in a horizontal bore in the housing I and the internal bore of which. is the bearing for and supports the end of the' counter-shaft H6. The two housings I30 and I5I-- are connected together by a bail I34, shown as:

in'after, 'the'gear' III is mounted on a sieeve which is journaled in the'stationary framework," and the shaft H0 is of polygonal cross section whereby itis, in eifect, splined to said sleeve.

- The carriage may therefore be moved right andleft, the shaft sliding in the sleeve; and if it is moved far enough leftward the shaft will be withdrawn from the sleeve altogether.

The left hand carriage supporting bracket I05 (Figs. 7, 8, 3 and 18=) has its forward part shaped to support the stationary rail 52 by a block I20 as heretofore, but its rear part is box-like and serves as a housing for the worm wheel I04 andworm I05, and is provided with bearings for the main shaft I00 and the short shaft of the worm I05. It is closed on its left face by a cover plate I 50.

A frame bar I51 extends across the back of the machine, being secured to the side frames 5i by screws I00. v

The principal frame casting I40 (Figs. 8 and 10) is situated some distance to the left of the end casting I05 and provides bearings for a number of the movable parts of the mecha'nisnp It comprises a right hand web portion witlr flanges, one of which, i4l, is bolted directly to the stationary rail bar 52. Another flange pro--' jects downward to become a bracket I42, which" is rigidly secured to the bar I01 by an inter-- mediary spacing block 140.

The czuteh As will appear'hereinafter, the disk III is theprimary driving element of the long feed mecha' nism. Itshub I44 (Figs. 9 and 15) is journaled on a projecting hub portion of the clutch disk I II which latter isfast on shaft I00 to the left of" casting I40. In effect, said hub extends through said casting and is-coupled to the hub of a cer-'' tain gear I45 on-the right hand side of the casting and pinned to the shaft. The hubs of wheels I I0 and I45 are shown coupled together by interlocking projections through a sleeve I40, to facilitate assembly.

The clutch dog II2 (Figs. 12 and 13) is piv-- oted to the face of the disk III,'has a spring I41 and co-operates in the ordinary way with* a tripping dog I40, pivoted to the casting I40- and having a'spring I50. The disk is yieldingly' held in its stop position by a spring urged detentlever I5I (Fig, 11) having a roller I52 engagingin a notch in the disk. The dog I40 is trippedon occasion by a link I having a notch I541 adapted to engage a pin I on an arm of said" dog. Said link is pivoted to an arm I50 on a rock shaft I51 passing through and journaled in the casting I40. Saidshaft is rocked counterclock-- wise (in Fig. 12) and back at a suitable momentonce in each machine cycle. This will trip the clutch and start a paper feeding operation at that mJnent'provided the link I50 has beenswung ,up from it'snormal disengaged positiom (Fig. 12) 'to causethe notch I54 to engage the pin I55(Fig-. 13). Various'devices may be pro-- vided so to swing the. link whenever a long feed is required by a particular. job of printing. The: free end of the link I50 is guided in a slot in'a' bracket I50 and is drawn to ineffective position. by a spring I00. In practice the shaft I51 is os-- cillated to trip the clutch a. little after the mo-..

ment of printing, audit will be perceived that the}, link I50 may be swung to effective position at almost any time between oscillations, and the clutch will be released at the right moment.

made up of two pieces. As will. fully appear here-s 25 1A8 the shaft!!! makes oneand one-fifth iii- RS:

QJOOJGI per machine cycle, it is not suited to control directly the oscillation of the clutch release shaft I51. For this and another reason that will be explained, it was found desirable to provide another part which rotates once per machine cycle, namely, an assembly journalled on a stub shaft I6I projecting rightward (leftward in Fig. 15) from the casting I40. Said assembly comprises a gear I59 meshing with the gear I45 on shaft I03, a cam I62, and a cam I". The gears I45, I59 have a ratio of five to six, so that the cams I52 and I 63 rotate once per machine cycle. The cam I62 (Fig. 14) has one hump which, soon after the moment of printing, oscillates a follower arm I54 which is fast on the right hand end of the shaft I51 and is influenced by a spring I65.

The cam I62 vibrates the link I55 soon after the time of printing, on every cycle of the machine. This trips the clutch only when, by means to be described hereinafter, said link has been swung up into engagement with the pawl I48 (Fig. 13). When only one line is printed on a form (as in check writing) this will occur on every cycle. The disk III will begin its rotation soon after printing a line in one cycle, will complete its rotation and be arrested when the cam I52 has turned only 300 (at 135 of the next cycle) and the disk will stand still (to permit printing) while said cam is making the remaining one sixth of its rotation, at the end of which the clutch will again be tripped; and so on, cycle after cycle. During this one sixth of a machine cycle, the clutch disk III will have made one fifth of a rotation, and it must, therefore, have another notch one fifth of its circumference behind the notch previously engaged by the dog II2. In short, said disk has five notches, and, where the long feed operates on every cycle, the clutch dog will, on each cycle, engage the next notch behind the one engaged by it on the preceding cycle. The disk IIII makes one and one fifth turns for each turn on the cam I62.

In order to assure that the clutch is never tripped at the wrong time in the cycle, a device is provided which will now be described. The machine itself will not trip the clutch at the wrong time, but, if the usual cover plate was of! it might easily be done by accident or carelessness. A screen in the form of a disk I55 (Figs. 12 and 15) lies beside the clutch disk H and the tooth of the pawl H2 is broad enough to ride on both disks. Disk I" is circular except for a notch I61 occupying about one fifth of its perimeter; so that only one of the notches of disk II! is ever exposed at a time. The disk I55 is fast on the end of a sleeve I58 passing through the casting I40 and surrounding the shaft I 53. At its right hand end said sleeve carries a gear I15 meshing with a gear I" forming part of the assembly I59, I82, I, which makes one rotation per machine cycle. Gears I15 and "I have a 1 to 1 ratio so that the screen disk I" makes one turn per cycle; and it is so disposed that its notch IE1 is in register with the pawl H2 at the moment when said pawl is released by the cam I52. If the pawl I45 was inadvertently tripped at the wrong time the pawl II2 would ride on the screen disk, allowing one or more clutch notches to pass under it, and would drop into the right notch at the correct time.

Diflerential drive mechanism In the illustrated instance of the invention, the mechanism is adapted to handle a web of paper divided into forms such as shown in Fig. 4. This form is eight and one half inches long, equal to 51 single line spaces; and these 51 spaces are numbered in the left hand margin. The heading consists of the name and address of a customer, space being provided for 5 lines, three of which are shown printed, beginning at space #6. Each line is printed from a separate card. This heading is single spaced. The items are double spaced, being printed on the even numbered spaces, beginning with #14. Provision is made for fifteen such lines, the last on space #42. In the following description it will be convenient to refer to these as item lines numbered 1-15, inclusive.

As explained hereinbefore, the platen is turned to advance the paper to different extents, through the gear H3. This gear is attached to or is part of a unit which also comprises a line-finding" drum I12 (Fig. 9) loosely, and preferably detachably, mounted on the drive shaft I03 adjacent the disk III. A washer I13 separates the two and serves to retain the hub of said disk on the hub of clutch disk IIII. Said unit comprises a sleeve I14 journaled on the shaft I03. The line finding drum is made up of several disks (three such disks, I15, I16 and I11 being shown in the present instance) and some spacing washers I18. The first disk I15 and the gear II! are riveted 0n the reduced ends of the sleeve I14, and, after all of the disks are properly adjusted as will be explained, the parts of the unit may be rigidly secured together as by rivets I80.

The gearing between the gear H3 and the platen is so proportioned that one complete rotation of said gear feeds the web of paper a distance equal to the length of a. form, fifty-one single line spaces in the present instance. The line space ratchet 10 has thirty teeth, and the gearing between the platen shaft and the shaft H5 is in the ratio of one to one. The gears H5 and H5 therefore have a ratio of fifty-one to thirty. All this being so, when the paper is properly positioned on the platen and any particular line space of a form is at the printing line, the gear H3 and the drum including the line finding disks I 15, I16 and I11 occupy a definite angular position (Figs. 20, 21 and 22). Thus the first heading line of a form (space #6) is brought to printing position by turning the disk I15 until the notch I8I stands in the position shown in Fig. 11. Each of the disks has such a notch, and the disks may all be alike except with respect to the angular positions they occupy in the drum.

In making up a drum for a particular form, line disks of the requisite number are provided, and each is adjusted angularly until its notch I15 occupies the angular position appropriate to its line on the paper, and all of the disks are then rigidly secured. as by the rivets I85.

Each line finding disk I15, etc., is driven on occasion by its one of several line pawls I82 (Fig. 11) pivoted on a stud I83 projecting from the drive disk III across the drum I12. Each of said line pawls is drawn toward its line disk by a spring I84 and is normally held out of engagement by a latch lever I85 pivoted to disk III on a stud or post I86 and influenced by a spring I51. Figs. 11 and 13 show the disk III, a pawl I82 and its latch I85 in their stop positions. If now the latch I85 for the line disk I16 (the proximate one in Fig. 11) be released, the spring I84 will draw the tooth of the pawl I82 into contact with the periphery of the disk I18; and when thereafter the pawl I48 is tripped to close the clutch, disk .I II will make acomplete rotation and be arrested in its normal position. ,During this rotation, pawl I 82 will ride idly on the disk I18 until it falls .into the notch I19, when it will rotate the drum 112 (Fig. 9) and, through the described train of gearing, will rotate the platen. The notch I19 of disk I16 will thus be brought to the position occupied in Fig. 11 by the notch I8I of disk I15; and the line unit, including the gear II3, will be rotated to an extent equal to the angular distance between the two notches I19 and I8I shown in Fig. 11, that is to say to a distance equivalent to eight single line spaces, feeding the paper .from space #6 to space #14.

In order to prevent overthrow of the parts, each line pawl I82 has associated therewith an auxiliary pawl I90 pivoted on the post I83 and having a spring I9I which presses a stud I92 on said pawl into contact with the pawl I82, so that the latch lever I85 holds both pawls away from the disk. The tooth of the pawl I82 is abrupt on its outer edgeand that of-pawl. I80 on its inner edge. In operation both teeth rest. on the periphery of the line disk until the notch is reached, when the pawl I82 first drops and a moment later :the pawl I90 drops, the two teeth of the two pawls together occupying the whole lengthof the notch. .When the disk III reaches the end of a rotation, it is positively arrested by the dog I48 and is forcibly retained in stop position by the detent II, I52; and the pawl I90 positively prevents the gears 3; etc; from overthrowing ahead of it. The pawls are not disengaged until after the :drum has come to rest.

In order to trip the latches I85selectively, trip -levers I92 arepivotedon a fixed post I93 and .urged counter-clockwise; in- Figs. 11' and 13 by springs I94. The lever I92 shown in Figs. 1-1 .and 13 is the;- extreme right hand one and is associated with a. notched disc I which in this :particularmachine is the one-that is operated fol- .-.lowing the printing. of a total and which feeds the paper-totheiflrst heading line of the next form. Said lever has three arms,the upstanding ;-one of which has :a pin I95 adapted when the,

ilever I92 is rocked clockwise to trip its latch lever .I85.' Said lever I92 has a second arm for acting :.on a post 196 projectingfrom the free end of ithe release link I53 and adaptedwhen the release -lever is operated tozswing said link I53 into opverative engagement with the pin I55 on the :.,olutch.-releaselever.I| 8. The lever I92 has. a :third arm.-which is operated onoccasion by a .pin I91 which. in turn isoperated by an arm I98 ion-a certain rock shaft :I 99. This particular shaft ;;is herein called-the total trip" shaft and, as will .be described hereinafter itz is rocked automatica-lly preparatory to a total taking cycle. In general, these trip levers may be operated by any suit- =ahle means according to the requirements of the .work and the; construction of the machine. It vwill be noted that each of them releases one of the latches I85 and that all of .them set the link I53 into engagement with the release lever I08. Means are provided to restore the-line pawls I:82 and I90 after the line drum and the gear I I3 have come to rest. Said means includes an arm 200 mounted on a rock shaft .ZIH (Figs. 11 and 13) and having a post 202 extending be- .neath all of the line levers I82 behind their pivot -;I;83 so that rocking .said lever clockwise from the position of Fig. 11 to that of Fig. 13 disengages any of. said levers. Arm 200 is influenced by a spring203.

The shaft spanned and passes form skipping the heading space. .also feeds the paperto that'Jine, and the notches through the frame H0 and it'carnies an arm 20 (Figs. 13 and 14) having a follower roller bearing on the cam I83 which is a part of the unit hereinbef-ore described and which also includes the cam I62. In Fig. 13 bracket I40 has been omitted and the parts are there shown at the moment in the cycle in which the roller 205 rests on the top of the hump of cam I63. This moment has been chosen on account of a certain peculiarity of timing which will be explained hereinafter. It will be noted that at this moment the roller on the follower lever I64, which controls the shaft I51 and the link I53, has not quite reached the top of the hump onthe cam I92 and that, therefore, the release dog I48 has not yet moved quite clear of the pawl II2. In the specific machine illustrated in the drawing, this figure shows the parts at 168 Of the cycle. At some time previously, the pawls I82, I had been allowed, by the action of lever I92, to engage the disk I15. Printing had occurred at about Cam I82 will release pawl I48 at It will be noted that in Fig. 13 a tooth of ,the clutch disc H0 is about 27 degrees removed from the tooth of clutch pawl II2. These two teeth will collide and the disk III be started int-o rotation at 0f the cycle. Before that time the hump of the cam I83 will have passed the roller 205 entirely and the lever 200 will have resumed its normal position and the line pawls I82 and I90 will have returned into engagement with the disk I15.

The second line disk, namely, the disk I18, is immediately controlled by devices exactly like those above described for the disk I15 but the trip lever I92 is rocked by. the sensing of a conicludes a long pin 206 (Figs. 5, {Land 10) pivoted to an arm I89 fast on one-end of a rock shaft 201 which shaft is iournaled in-two brackets 208 ,secured to the frame bar. I31. Another arm on said shaft is operated by a link 209, which is operated in a familiar wayby a Bowden wire in the translator of the machine.

Capacity feed The third disk I11 is for use when the number of items to be printed equals or exceeds the capacity of the form; and this disk therefore feeds the paper to'the first item line of the next The disk I10 I8I and I89 in these two disks are therefore arranged in the same angular position. The tripping lever 192C for the. disk I11 is arranged tobe actuated by the act of feeding the paper .to the last printing. line. A cam plate 2I2,

Fig. 10, is mounted'on the face of the gear H3 in such a position that when the paper steps post I93 and thereby rocks the leverI 92C in preptions this may sumce without further elaboration of the mechanism. The operation would be as follows: assuming, for example, that the form has a capacity of fifteen item lines as shown in Fig. 4, after printing the fourteenth card the paper would be line-spaced to the fifteenth position, tripping the lever I920. If the group includes, say eighteen item cards, the fifteenth one would be printed on line fifteen in the next cycle and the paper would then feed to the first item line of the next form, where the printing of the three remaining items and the total of the group would be resumed. If the group contained exactly fifteen cards, then after the fifteenth card was printed in the fifteenth item cycle, the paper would feed up to the first item line of the next form. Meanwhile in the last half of the fifteenth cycle, the first card of the next group would be sensed initiating a total-taking operation, and the total would be printed alone on the second form. In case there happened to be just fourteen cards in the group under consideration then the first card of the new group would be sensed in the latter half of the fourteenth cycle, initiating a total-taking operation. The paper would however be line-spaced resulting during the idle cycle of the total-taking operation in the paper being fed to the first item line of the next form where the total would be printed. The pulling f the total shaft of the machine would cause disk I to feed the paper to the first heading line of the next succeeding form, leaving the total as the sole line printed on the second form. In some installations this mode of operation may be acceptable.

In most installations however it is preferred that under the conditions last mentioned the total be printed at the bottom of the first form. Means are therefore provided to nullify the paper feeding operation in case the fifteenth card should prove to be the first card of a new group. The fifteenth card is sensed in the last half of the cycle in which the fourteenth card is printed and the change of designation is detected near the end of that cycle, resulting in rotation of a cam shaft 2" (Fig. 16) in the total taking control mechanism of the machine. The first effect of this rotation is to "pull" a certain credit balance shaft, and this is availed of to nullify the paper feeding operation. By means which will be described presently. said credit balance shaft is connected with a shaft 220 (Fig. 10) in the lower part of the paper feed mechanism and said shaft has an arm 22l having a pin 222 which acts on an arm of the pawl 2|! to release the lever I82C from said pawl. to its normal position, so that when later on the cam I32 operates the link I53, the latter will have been disengaged from the trip pawl I and no paper feed will occur. The total will therefore be printed at the bottom of the first form. During the total taking operation, the total trip shaft III will be pulled and the paper will be fed to the first heading line of the next form.

With the mechanism as thus far described, in case the sixteenth card proved to be the first of a new group, then the total would be printed alone on the second form and for the purposes of some users this may be acceptable. In fact, most prior compensating feeds operate to that effect.

There is however sometimes an objection to a total appearing alone on a form. For example, from each item card there may be printed not only the amount to be computed but also designatory matter identifying the account to which the Said lever returns 12 item belongs: and this designatory matter is not printed on the total cycle. Where the total appears alone on a form therefore there is nothing printed on that form to identify the account to which the total relates. Some users, therefore, insist that always at least one item be printed on the same form with the total. In meeting this requirement we are confronted with the fact that if there happens to be exactly fifteen item cards in a group the paper feeding mechanism thus far described would begin to operate soon after the fifteenth item was printed and before the machine discovered near the end of the cycle that the sixteenth card was of a new group. In order to overcome this difficulty. means are provided, according to which, if the fifteenth card is of a new designation, the total will be printed at the bottom of the form as above described; but if it be of the old designation the machine will be caused to execute a blank cycle in which the paper will be fed to the first item line of the next form, where the fifteenth item will be printed on the cycle following said blank cycle. It is thus impossible that the last card of a group be printed at the bottom of a form and a total printed by itself on a form. This reduces to fourteen the number of items that can be printed on a form; but the total is still printed on the fifteenth line when there are exactly fourteen items in a group.

Blank cycle mechanism The lever I320 (Fig. 10) which prepares for a long paper feed at the end of a form, has a depending arm which, through a link 222 rocks a "capacity shaft 223. This shaft at its left end (right end in Figs. 7 and 8) is ioumaled in the bracket I21, it passes through the bracket Ill, and at its right end it is iournaled in the same bracket 224 as the shafts I9! and 220 (Fig. 16). Said bracket is secured to the frame bar I181. The parts controlled by this shaft are shown in normal (inactive) position in Fig. 18, in operated positions in Figs. 1 and 16 and in operated position in the exploded isometric view, Fig. 17. Near its right hand end, the shaft 223 carries two arms 22! which operate two links 226 by pin, slot and spring. The work of setting the machine for a blank cycle is performed by a link 23! which, in

the illustrated machine, is conveniently operated by an existing rock shaft 23!. The latter is one of two shafts which are rocked clockwise as viewed in the drawing in the last part of each machine cycle, to restore the stops which arrest the type bars. We have secured to said shaft an arm 232 having a pin 233 projecting therefrom into position to be engaged by a hook 234 pivoted at 233 to the link 233 and drawn into engagement by one of the links 226. The pin 233 passes through a long guide slot in the link 230. A second hook 233 pivoted to link 233 at 23!, normally lies just behind the frame bar I31, and is connected with the second link 223. When the capacity shaft 223 is rocked clockwise, the hook 234 is hooked to the pin 233 and the second hook 233 has its nose pressed by its spring against the face of the bar I31. When, then, shaft 23l is rocked, Din 233 and hook 234 lift link 233 until the hook 233 snaps over the top of the bar, holding link 233 in its pulled position until the capacity shaft returns to normal, when it releases the hooks and allows the link to fall. A lever 231 pivoted on a post 23!, has two off-set arms to one of which the link 233 is pivoted and to the other of which is pivoted a push link I.

A "blank cycle" of the Powers machine in- QAQCLQ H volves three things, viz., (a) the fifteenth card is held in the sensing chamber to be re-sensed so as to have its data printed in the next succeeding cycle; (b) the card picker is locked during the blank cycle; and (c) the type bars are pre- .vented from rising so that said data will not be printed in the blank cycle. The link 249 is con- ;nected up to perform these functions.

The total taking control mechanism of the Powers machine includes two cam shafts, viz., a total shaft 2I8 (Fig. 16) and a grand total shaft 2I9, one of which, on a change of designation is set into rotation at the beginning of a cycle, said shafts being geared to make one rotation, the total shaft in two machine cycles and the grand total shaft in three. The so called slam bail cams 229 shown in Fig. 16 are adapted to keep respective follower levers 24l and 242, in operated position through the blank cycle of a total taking operation. The two levers are pivoted on fixed posts and articulated to rock together. When rocked, lever 24I operates through link 243, lever 244, link 245, lever 246 and link 241 to pull (rock clockwise) the slam bail shaft 250; and this, through a link 246, pulls the designation shaft 25I. Behind the shafts 25I and 259 are a total shaft 252 and a grand total shaft 253. In Fig. 16 the latter two shafts are in normal position and the former two are pulled. Each type bar 254 may be restrained against rising to print"- ing position by a slam bail pawl 255, controlled by a bar 256 having two coupling devices 251 hand settable into and out of position to be actuated by blades 259 carried by the total shaft 252 and .grand total shaft 253. In Fig. 16 these are shown set inactive. A third coupler 269 is set to be operated by the slam bail shaft 250, and it is shown so set and so operated; and the pawl 255 '18 set to restraining position, to prevent numbers from being printed by said type bar and added -.on the accumulator 26l. Any coupler 255 can also be rocked so as to be operated by the blade 255 of the designation shaft 25I. In practice it is usual to set all couplers 265 in adding fields as shown so as to restrain their type bars, and in all fields used for designation or alphabetic printing to set said coupler into co-operation with the designation shaft 25I. It results that on blank cycles none of said type bars rises.

Card feed is effected from a hopper 9III (Fig. 16) by a picker 902, which, through a linkage 953, 904, 995, 265, 956, is operated by a cam 951 on the base main shaft 60, and by a spring 955. Feed rolls 999 convey the cards to the sensing chamber 210. The feed is stopped in total taking operations by cams (not shown) one on each of the shafts 2| 8 and 2I9 and acting on a follower lever 259 (Fig. 1'7) to push downward a link 262 (Figs. 16 and 1'7); which, through bell crank 262, link 264 and arm 265, rocks a shaft 266 and swings a latch 251 into position to lock the link 255 of the mechanism which operates the card picker. This interrupts the feeding of new cards from the hopper.

The sensing chamber comprises two horizontal plates 210 between which the card is fed and where it is arrested by the card stop 21I. The latter consists of a bar having upright arms 212 engaged by arms 213 on a shaft 214, the stop being moved down to stopping position and up to releasing position by rocking said shaft. Said shaft has fast thereon an arm 215 with 8. lug 216 adapted to contact with the rear edge of the llnk 252. Said link has a shoulder 211 so made that, when the link 262 is in its normal upper position the .shaft 254- can rock to releasing position, but when saidlink is depressed as in Fig. 16, the link blocks movement of lug 215 and locks the card stop-in its. stopping position.

All of this totaltaking control mechanism is well known-and it is jfullydescribed in the Patent No. 2,323,816, except that the means for locking the card stop as here-shown differs in detail from'the patent. The blank stroke mechanism above briefly described, is operated. by the mechanism of the present invention as follows: The follower lever 242 (Figs. 16 and 17) is extended to include a rear arm which is pivoted at 211 to the link 240, so that, when said link is depressed as above described and as shown in Fig. 16, the slam bail shaft 250 and designation shaft 25I are pulled, the followerdevers 242 and 2 being lifted off of their cams. When said follower levers-are rocked in total taking,.thelink 235 is vibrated up and down, but the hooks 254 and 236 .are. then in inactive positionand such, vibration is without effect. e

The link 252 has a pin 2". extending there: from beneath the lower end. of the linkv 245, which, when operated, thereby depresses the link to stop the card feed as described above. In order that the paper feed mechanism may depress the link 252 independently of the follower lever 259; the latter isconnected with the former bypinandslot25l. y:

a The mode of operation of the capacity feed mechanism-differs somewhat, depending on the number of cards in.;a. group, or, in other words on the number of items to beprinted. It can gist be understood by reference to the time chart.

-g-. 22. In case there are fifteen or more cards (items) :in a group in the fourteenth item cycle, the fourteenth item is printedat .166". At 168?, the cam {63 operates the ,pawl-restoring arm 25!, idly. 'At-180, cam I52 vibrates release link I53.. idly. In the second half. cycle, the fourteenth item is added andthefifteenth card is sensed. At

-'l84-255 ,;the paper :18 dine spaced to the fifteenth or extra 11118,,Cal15ing cam 2I2 (Fig. iii) to rock trip-lever I920. This engages re:- lease link I53 with pin I55 and releases pawls I52 and I for engagement with the line-.disk I11. It also, through llnk..222, pulls the capacity shaft 223, setting hooks 254, 226 (Fig. 17) for operation. At .3183, shaft 25I (Figs. 16 and 1-7) rocks and, through link-235 and the described mechanism, pulls the slam bail shaft to prevent the rise of the typebars, and locksthe card picker and card stop, thus conditioning the chine for a blank cycle.

In the fifteenth cycle no type bars" rise and no card is fed, the fifteenth card remaining in the sensing chamber. At168 the pawl restoring :arm 2" vibrates, momentarily restoring the feed 'pawls I52 and I55; but as their latches I55 are held releasedfthey immediately return to contact with the disk I11. At the clutch is tripped by cam I52, and atthe disk III begins its rotation. I In the sixteenth cycle, the rotation of the disk III and the resulting feed of'the paper (Fig. 4)

-to space #14 (first item line of the next form),

is-completed zit-135. During this feed, cam 2I2 on gear III, passed beyond follower 2I2, and release lever I92C returned to normal position; as did also the-capaeity-shaft 225. The hooks' 224 and 255 therefore returned to inactive position, allowing theanachineneontrol devices to return 

